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/* Copyright (c) 2002-2006 Lucent Technologies; see LICENSE */
#include <stdarg.h>
#include <fmt.h>
#include "plan9.h"
#include "fmt.h"
#include "fmtdef.h"
int
sprint(char *buf, char *fmt, ...)
{
int n;
uint len;
va_list args;
len = 1<<30; /* big number, but sprint is deprecated anyway */
/*
* on PowerPC, the stack is near the top of memory, so
* we must be sure not to overflow a 32-bit pointer.
*
* careful! gcc-4.2 assumes buf+len < buf can never be true and
* optimizes the test away. casting to uintptr works around this bug.
*/
if((uintptr)buf+len < (uintptr)buf)
len = -(uintptr)buf-1;
va_start(args, fmt);
n = vsnprint(buf, len, fmt, args);
va_end(args);
return n;
}
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